Ornamental-stitch machine.



N0. 662,l85. Patented Nov 20,- I900. l. B. BURDICK.

DRNAMENTAL STITCH MACHINE.

(Application filed Feb. 26, 1900.) (No Model.) 3 SheetsSheet I ij i g @W Ma 7 mmms PETERS co. PHoYauwu, WASNLNGTCN. n, c.

No. 662,185. :P atented Nov; 20,1900.

R. BURDICK. ORNAMENT AL STITCH MACHINE.

3 Sheets-Sheet 2.

(No Model.) I

(Application filed Feb. 26, 1900) J' i I No. 662,!85. Patented Nov. 20, I900. I. R. BURDICK. DRN'AMENTAL STITCH MACHINE. (App! nfildFb 26 1900 3 Shets-Sheet 3.

(N0 Modem IINirEn STATES,

IDA R. BURDIOK, OF GLOVERSVILLE, NEW YORK.

ORNAMENTAL-STITCH MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 662,185, dated lN'ovemloer 20, 1900.

Application filed February 26, 1900. serial No. 6,620. (No model.)

To all whom it may concern.-

Be it known that I, IDA R. BURDIOK', a citizen of the United States, residing at Gloversville, in the county of Fulton and State of New York, have invented a certain new and useful Improvement in Tambonring-Machines, of which the following is a full, clear, and exact description.

The main object of this invention is to provide a simple and economical machine for stitching the backs of gloves, although the machine is applicable for stitching or tambouring generally.

In carrying out my invention I use a vertically-reciprocating hook and a vibrating feed mechanism for feeding the material longitudinally and laterally-that is to say, in two directions, one substantially at right angles to the otherso as to make a zigzag line of stitches. The thread is fed from below the material-feed mechanism and is engaged by the hook through the intervention of a looper and is looped through the material and laid upon the upper and right side of the material in plain sight of the operator, all as I will proceed now more particularly to set forth and finally claim.

In the accompanying drawings, illustrating my invention, in the several figures of which like parts are similarly designated, Figure 1 is a side elevation, the clothplate being in longitudinal section of a well-known form of sewing-machine having my improvements applied. Fig. 2 is a horizontal section just below the cloth-plate. Fig. 3 is a left-hand end elevation. Fig. 4 is aperspective view of the vibrating cam details. Fig. 5 is a perspective view of the looper and its holder. Fig. 6 is a plan view of the presser-foot. Fig. 7 is a perspective view of the hook and cast-off. Fig. 8 is a diagram illustrating one form of stitch.

I have selected a Well-known form of sewing-machine to illustrate my invention, but Wish to be understood as contemplating the application or adaptability of my invention to other forms of machines.

The pedestal or bed 0., its Wall a, the overhanging arm I), having guide-bearings b for the vertically-reciprocating bar 0, the bar-reciprocating lever d, fulcrumed at d to the overhanging arm and connected by an eccentric link 6 with the rotary main shaft f, the

presser-foot g and its spring-depressedbar g and litter g may be of any approved construction, excepting that the presser-foot has a large triangular opening, as shown in Fig. 6, and is capable of vibrating with the feed-dog 72 and its carrier h, as will appear more fully presently. The cloth-plate i, secured to the upper surface of the wall a, may also be as usual. The openings in the feed-dog and the cloth-plate are also enlarged to provide for the lateral movement of the material. The main shaft has a switch-cam j, which is engaged by a shoe 7c, swiveled in a head lo ona rod k which is adapted to slide lengthwise in a post and the wall a. A leverlis pivoted at one end to a post Z, projecting from the wall a or otherwise supported, and its other end Z is applied to the rod k and between these ends is pivoted to said lever a link P, which is supported to slide back and forth in the wall a. At its free end this link 1 engages the proximate slotted end of the feed-dog carrier h. The feed-dog carrier has a rear forked end to engage a pivot-pin m,

and between its ends said carrier is provided with a slot in which rotates the cam n on the main shaft to give to said carrier and feeddog the usual back-and-forth and up-anddown feed motions, and during these motions the lever Z through the link Z imparts a lat eral vibration to the said feed-dog and carrier. The under side of the cloth-plate is provided with a thread-guide 0.

The looper is composed of a thread-carrier 10, here shown as of coiled wire of V shape, having the coil 10 for carrying the thread in the apex of the V. This thread-carrier is secured in any suitable manner, as by one of its arms 10 to an upright bar or holder g, which is pivoted to swing toward and from the wall a in a rocker-stud q, mounted in the walla. This holder (1 is normally drawn rearwardly by a coiled or other spring 1" and is also normally drawn toward the wall a by a coiled or other spring 1", so as respectively to cause a pin 3 on the holder and the rear face of said holder to engage, respectively, the periphery of a cam 25 and a face-lump t of said cam, which cam is mounted upon the end of the shaftf.

I employ a hook to instead of a needle in IIO the bar 0 and provide therefor a cooperating cast-off 'v. This cast-off is secured to a slidebar Q2, mounted upon the bearings 17 by screws 0 passed through slots in said slide-bar into said bearings, and said slide-bar is held in given position by a friction-spring o borne by the overhanging arm. The slide-bar is provided with. a lengthwise slot 1;", which is engaged by a pin if on the bar 0.

The take-up w is a wire supported in the wall a, and having one end 10' extending into the path of movement of a pin 20 on the switch-cam and having its other end slightly bent and crossing the path of the thread, so that said take-up is positively vibrated at intervals to actuate the end w properly to apply pressure upon the thread.

I have thus described the illustrated form and application of my invention to one type of well-known sewing-machine, but, as previously noted, mean not to limit myinvention thereto. I will proceed now to describe the operation.

Thread having been supplied from a spool or other source is passed through the guide 0 over the end 10 of the takeup, thence through the looper-eye p and up through the cloth-plate. Motion being given to the main shaft, the hook descends and catches the thread, which is then bent about it in the form of a loop by the back-and-forth motions imparted to the looper by means of the periphery of the cam 15 engaging pin 8 and the retractile force of spring 1', and the lateral vibrations of said looper are elfected by the face-lump i engaging the back of the looperholder to force it away from the hook and the retractile spring r to draw it toward the hook. The feed-dog is given its usual back-andforth and up-and-down motions and in addition has a vibratory motion toward and from the wall a, imparted to it by the link Z ,which motion, being compounded with the backand-forth and up-and-down motions of the feed-dog, results in giving a zigzag line of stitches, and these stitches are laid upon the upper and right side of the material in plain view of the operator. Such a line of stitches or loops is shown in full lines in Fig. 8, and, if desired, the first-laid line may be overstitched bya second line, the stitches of which cross the first-1aid stitches at about right angles, as indicated by the dotted lines in Fig. 8.

It will be observed that the cast-oh? is carried up with the hook-bar and is there held by the friction-spring while the hook is descending for the next loop and until the pin '0 on the bar reaches the end of its slot in the bar 1), and then it is carried down, and there is a like dwell of the cast-off in the ascent of the hook. Since the cast-01f hugs the hook and on its barb side there is a cooperation between them which insures the proper formation and interchaining of the successive loops.

It will be noticed that the area of toothed feed-dog surface is quite large and a large presser-foot is employed and contact 'is' intimate between them, and all this is necessary in order properly to do glove or leather work. The hole, however, in the throat-plate for the hook is not enlarged, but is of a size complemental to the book.

What I claim is- 1. The combination of a feed-dog, means to impart to it back-and-forth and up-and-down motions, and means to vibrate it laterally, with a stitch forming mechanism including a reciprocating hook and a cast-off therefor, a complemental looper constructed as a threadcarrier, a pivoted holder for such looper, means to reciprocate said looper and its holder longitudinally and laterally with relation to the feed-dog, a take-up and means to vibrate it, substantially as described.

2. The combination of a feed-dog, means to impart to it back-and-forth and up-and-down motions, and means to vibrate it laterally, with a stitch-forming mechanism including a reciprocating hook, a complemental looper constructed as a thread-carrier and receiving the thread from below, a pivoted holder for such looper, means to reciprocate said looper and its holder longitudinally and laterally with relation to the feed-dog, a take-up and means to vibrate it, substantially as described.

3. A machine for stitching the backs of gloves, and for stitching other objects, with zigzag lines of stitches laid on the face or side exposed to the operator, comprising a reciprocating hook, to which a single thread is supplied from below, and a looper-holder pivotally connected to a fixed portion and adapted to be vibrated across the path of the descending hook and transversely thereto, a cam having peripheral and face contact with said looper-holder, means to hold the looper-holder in operative contact with said cam,and means to impart a zigzag longitudinal feed to the ma terial, substantially as described.

4. A machine for stitching the backs of gloves, and for stitching other objects, with zigzag lines of stitches laid on the face or side exposed to the operator, comprising a reciprocating hook to which a single thread is supplied from below, a cast-off, a complemental looper constructed as a thread carrier, a looper-holder pivoted at its lower end to a fixed portion, means to impart a back-andforth and a laterally-vibrating movement to said looper and its holder, and a materialfeeding mechanism including a feed-dog having lengthwise, rising-and-falling and laterally-vibrating movements, substantially as described.

5. A machine for stitching the backs of gloves, and for stitching other objects, with zigzag lines of stitches laid on the face or side exposed to the operator, comprising a reciprocating hook, to which a single thread is supplied from below, a cast-off, a cast-off slide having a slot-and-screw attachment to the machine-head and a slot-and-pin connection with the hook carrier or bar and thereby adapted to be intermittently reciprocated by the said hook carrier or bar, a complemental looper, and a material-feeding mechanism including a feed-dog having lengthwise, risingand-falling and laterallyvibrating movements, substantially as described.

6. A machine for stitching the backs of gloves, and for stitching other objects, with zigzag lines of stitches laid on the face or side exposed to the operator, comprising a reciprocating hook, to which a single thread is supplied from below, a complemental looper constructed as a thread-carrier, a looper-holder 

